Dry-cell battery.



H. R. PALMER. DRY CELL BATTERY. APPLICATION man FEB. s. 1913,.

APatented D00. 3, 1918.

Eternel 4 in which the life Patent poles comprising sulting from the two-fol UNITED sTATEs Tl OFFICE.

HERBERT R. PALMER, 0F CLEVELAND -HEIGHTS, OHIO.

DRY-CELL BATTERY.

Application led February 8, 1918.

speci cation.

This invention relates to the of dry-cell batteries'of the Le disch medium. The invention consists in improved modiications which are the result of experiments made by me While developing certain drv cell batteries invented by me, one of 4which is described and claimed in a former application of said application having been allowed December 11', 1917. Another one is No. 1,231,057, June 26, 1917. Inasmuch as this is an improvement on my former inventions, the primary object is the same, said object being to increase the eiliciency of a cell of the type set forth, without materially increasing the volume or weight In my former construction I realize the object desired by the employment of one carbon or positive ole and two negative zinc strips of sinuous ormation pecullarlyarranged relative to the carbon element and the depolarizing mixture.`

two carbon electrodes and a single anode of sinuous formation, interposed between the carbons. This improved construction reduces the electrical resistance one-half, red increased crossanode material, quantity of carbon, the diilerence in cost of the carbon and the material used in the Specification of Letters Patent.

cell, of th mine bearing Serial Number- `a perspective viewo g im roved cell.

Patented Dee. 3, 1918. serial No. 216,041. l Y

v`anodes', combined with the decreased cost of assembling makes a more economical battery.44

An -important tery of this character, is the perfect insulation of the metallic anode terminals from the depolarizin mixture. The improved construction rec uces the chances of'imperfection in this feature by the elimination of one anode in each cell, thereby providing for the insulation of one metallic terminal ind of two as in my former construction.

The improved construction further'provides for the elimination, on two sides of the e auxiliary stll'ening members,

struction including a sinuous anode.

In a comparative test of a battery ofthe present construction, and one embodying the twin sinuous-anodes, a

By utilizing either one eV twin anodes` inl connection with the single carbon electrode, about 18 amperes was-developed, then y combining the two anodcs in connection electrode about 25 amperes was the In a carbons were connected and used in combination with the single sinuous anode 30 am peres was obtained, thereby showing an increased efliciency.

In the accompanyin drawing which forms a part of the s ecication, Figure 1 is an embodiment of the 1g. 2 is a cross-section on line 2-2 of Fig. 8.

Fig. 3 is a vertical section on line 3-3 of F ig. 2.

ous anodes.

Fig. 6 is a fragmentary View ofthe zinc or active element ofthe anode, showing a preferredform of blank before it is bent into sinuous shape.

factor of efficiency in a batpeculiar fact has -with the single carbon battery embodyingla single sinuous 1 00 Figs. 4 and illustrate two types of simi;A

in my former ls enveloped oxid, is packed around and Referring now to the drawing, the present embodiment of the improved dry cell includes duplicate fiat carbon members 1, which are the cathodes of the cell, and also serve as the stiffening members for two sides of the battery. The other two sides andthe ends may be of any suitable material. A

paraflin is employed for t e sides 2, the bottom 3 and the top 4:. l

The single anode of the present improved cell is similar to one of the twin anodes used battery above referred The said anode is sinuous in formation and may be of. the type shown in Fig. 4 or of that illustrated in Fig. 5. In either type the anode comprises a zinc ribbon 5, entirely in absorbent material 6, and provided with a binding post 7.

A .suitable depolarizing mixture 8, preferably containing carbon and manganese dibetween the leaves of the anode and in contact with the faces of the carbons 1. The sinuous carbon members l, the edges of the sinuous anode facing the said carbon members, and the flat surfaces of the leaves'of said anode being in lateral planes relative to the inner formation of the anode member provides a` large area of active element, in proportion to the size of the cell. This is an important feature of the present invention and was the primary feature of my former patent above referred to, but I have found that the present construction enhances the efficiency of the cell as stated in the preamble. It reduces the electrical resistance; decreases ythe cost` of ,manufacture and increases the assurance of perfection.

A (preferred form of zinc member 5 is rovide with recesses 5a 1n the opposite e ges comprising desirable construction is illustrated, in which al continuous strip of chiplboard soaked in as shown in Fig. 6, said recesses occurring in the lane of the bends 6a or 6b.

l' hat I claim and desire to secure by Letters Patent is.

' 1. A battery of the character described a pluralityof carbon cathodes, an anode of 'sinuous formation interposed between the cathodes, and depolarizing mixture packed around the anode inl contact With saidA anode and the cathodes. 1 f 2. A battery of the character described comprising a plurality of carbon cathodes which form sides of a container, an anode of sinuous formation interposed between. the cathodes, and depolarizing mixture packed in the container around the vanode in contact with said anode and the cathodes.

3..-A- battery of the character described comprising a closed container, an anode consisting of a strip of active material sinuous in formation thereby forming a continuous series of opposing members, an envelop of absorbent material surrounding saidsinuous strip, electrodes onopposite sides of said anode, and depolarizin mixture packed in said container around te anode and in contact with said anode and the cathodes. i

4 A battery of the character described comprising a closed container, an anode consisting of a series of connecting leaves of active material enveloped in absorbent material, electrodes on oppositesides of said anode, said electrodes forming sides of the container, the edges of the anode facing the electrodes, theV leaves of said anode being in transverse planes relative to said electrodes, and depolarizing mixture packed .in the container around the anode in contact vwith said anode and the cathodes.

In testimony whereof I aflix my signature.

Aunaniem: RQPALMER. 

